Zobrazeno 1 - 10
of 186
pro vyhledávání: '"A. Koeberg-Telder"'
Autor:
Ankie Koeberg-Telder, Hans Cerfontain
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 101:41-47
The reaction of the three tetramethylbenzenedisulfonic acids and some lower homologues in concentrated aqueous sulfuric acid has been studied at 25deg;C. 3,4,5,6-Tetramethylbenzene-1,2-disulfonic acid undergoes both intramolecular disulfonic anhydrid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09dcecb5820b21e8ca5df659d04853d9
https://doi.org/10.1002/recl.19821010104
https://doi.org/10.1002/recl.19821010104
Autor:
Ankie Koeberg-Telder, Hans Cerfontain
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 107:583-591
The homogeneous reactions of 1,4-dihydroxybenzene (1), its monomethyl (2) and dimethyl ether (3) and 2-3-sulfonic acid in 68-105% H2SO4 at 25°C have been studied and isomer distributions and rate coefficients for the various subsequent sulfonations,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87780fcc5a2ab5f24b1a667be21100d3
https://doi.org/10.1002/recl.19881071003
https://doi.org/10.1002/recl.19881071003
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 107:325-330
The homogeneous sulfonation of 1,2-dihydroxybenzene (1), its monomethyl (2) and dimethyl ether (3) in concentrated aqueous sulfuric acid at 25°C has been studied and isomer distributions, as well as rate coefficients for the sulfonation of 1–3 and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::921e34d0af666f64ff963b8c367cd0bd
https://doi.org/10.1002/recl.19881070405
https://doi.org/10.1002/recl.19881070405
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 91:33-36
The isomer distribution in the sulfonation of toluene with sulfur trioxide in nitromethane at - 25.0° and 25.0° has been determined as o: m: p = 13.6: 0.8: 85.4, and 12.2: 1.4: 86.4, respectively. These isomer distributions are overall data for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::765939bdce4ac656672ec581b468fc97
https://doi.org/10.1002/recl.19720910105
https://doi.org/10.1002/recl.19720910105
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 111:379-388
The sulfonation of [2.2]paracyclophane (1) with (i) sulfur trioxide in the presence of various amounts of dioxane as moderator in dichloromethane as solvent, and (ii) in sulfuric acid containing 98.5 wt-% H2SO4 acting both as reagent and solvent was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c00e1a473c03c3cc4eca2ac8737e46f
https://doi.org/10.1002/recl.19921110902
https://doi.org/10.1002/recl.19921110902
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 102:293-298
The protonation of phenol (2), 4-fluorophenol (3), phenyl methanesulfonate, potassium phenyl sulfate and the potassium 2- and -4-sulfonates of both phenol and anisole in concentrated aqueous sulfuric acid at 30°C has been investigated using 13C NMR
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a4aa487bde7f49d4ccba7ef35b75191
https://doi.org/10.1002/recl.19831020603
https://doi.org/10.1002/recl.19831020603
Autor:
Ankie Koeberg-Telder, Hans Cerfontain
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 109:41-45
Transfer sulfonations of anisole using various polymethylbenzenesulfonic acids (PoMBR's) catalyzed by trifluoromethanesulfonic acid at 25 °C are described. The observed reactivity order for transfer sulfonation increases in the order 2,4-DiMBS, 2,6-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23bcc890491346b6f935bf523fbdb039
https://doi.org/10.1002/recl.19901090203
https://doi.org/10.1002/recl.19901090203
Autor:
Ankie Koeberg-Telder, Hans Cerfontain
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 107:543-548
The homogeneous sulfonations of 1,3-dihydroxybenzene (1), its monomethyl (2) and dimethyl ether (3) in concentrated aqueous sulfuric acid at 25°C have been studied and isomer distributions and rate coefficients for the sulfonation of 1–3 and their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::044802d5be3f89b83769dc02c3bd39c1
https://doi.org/10.1002/recl.19881070905
https://doi.org/10.1002/recl.19881070905
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 108:7-13
The sulfation and sulfonation resulting from the reaction of the dihydroxybenzenes and their mono- and dimethyl ethers with SO3 in nitromethane have been studied, and their product distributions are reported. As to the non-hydroxy-substituent-contain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c889f1854838b796192e089bb4b3e17
https://doi.org/10.1002/recl.19891080103
https://doi.org/10.1002/recl.19891080103
Autor:
Harold R. W. Ansink, Erik J. de Graaf, Hans Cerfontain, Norbert J. Coenjaarts, Ankie Koeberg-Telder
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 108:445-451
The sulfation and sulfonation of a series of mono-, di- and trimethyl ethers of the trihydroxybenzenes with SO3 have been studied and the product distributions are reported. As for the trimethoxybenzenes, 1,2,3-trimethoxybenzene (4) yields the 4-sulf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22715a6af981985d04ba68e9210bf28d
https://doi.org/10.1002/recl.19891081205
https://doi.org/10.1002/recl.19891081205